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Research of Active Power Filter Modeling with Grid Impedance in Feedback Linearization and Quasi-Sliding Mode Control

机译：反馈线性化和准滑模控制中的电网阻抗有源电力滤波器建模研究

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摘要

Active power filter (APF) is the most popular device in regulating power quality issues. Currently, most literatures ignored the impact of grid impedance and assumed the load voltage is ideal, which had not described the system accurately. In addition, the controllers applied PI control; thus it is hard to improve the compensation quality. This paper establishes a precise model which consists of APF, load, and grid impedance. The Bode diagram of traditional simplified model is obviously different with complete model, which means the descriptions of the system based on the traditional simplified model are inaccurate and incomplete. And then design exact feedback linearization and quasi-sliding mode control (FBL-QSMC) is based on precise model in inner current loop. The system performances in different parameters are analyzed and dynamic performance of proposed algorithm is compared with traditional PI control algorithm. At last, simulations are taken in three cases to verify the performance of proposed control algorithm. The results proved that the proposed feedback linearization and quasi-sliding mode control algorithm has fast response and robustness; the compensation performance is superior to PI control obviously, which also means the complete modeling and proposed control algorithm are correct.
机译：有源电源滤波器（APF）是调节电源质量问题中最流行的设备。当前，大多数文献都忽略了电网阻抗的影响，并认为负载电压是理想的，因此无法准确地描述系统。此外，控制器还采用了PI控制。因此很难提高补偿质量。本文建立了一个由APF，负载和电网阻抗组成的精确模型。传统简化模型的Bode图与完整模型明显不同，这意味着基于传统简化模型的系统描述不准确且不完整。然后，基于内部电流环路中的精确模型，设计精确的反馈线性化和准滑模控制（FBL-QSMC）。分析了不同参数下的系统性能，并与传统的PI控制算法进行了比较。最后，在三种情况下进行了仿真，以验证所提出的控制算法的性能。结果表明，所提出的反馈线性化和准滑模控制算法具有快速响应和鲁棒性。补偿性能明显优于PI控制，这也意味着完整的建模和提出的控制算法是正确的。

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  • 来源
    《Mathematical Problems in Engineering》 |2017年第11期|9840657.1-9840657.11|共11页
  • 作者

    Shi Zeyu; Wang Yingpin; Xie Yunxiang; Li Lanfang; Xu Xiaogang;

  • 作者单位

    South China Univ Technol, Sch Elect Power, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, Sch Elect Power, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, Sch Elect Power, Guangzhou 510640, Guangdong, Peoples R China;

    Guangdong Power Grid Co Ltd, Elect Power Res Inst, Guangzhou 510080, Guangdong, Peoples R China;

    Guangdong Power Grid Co Ltd, Elect Power Res Inst, Guangzhou 510080, Guangdong, Peoples R China;

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